Surface proteins from gram-positive bacteria having highly conserved motifs and antibodies that recognize them

Abstract

Isolated peptide sequences and proteins containing these sequences are provided which are useful in the prevention and treatment of infection caused by Gram-positive bacteria. The peptide sequences have been shown to be highly conserved motifs in the surface proteins of Gram-positive bacteria, and these consensus sequences include amino acid sequences such as LPXTG (SEQ ID NO:13), ALKTGKIDIIISGMTSTPERKK (SEQ ID NO:14), VEGAVVEKPVAEAYLKQN (SEQ ID NO:15), and EYAGVDIDLAKKIAK (SEQ ID NO:16). By virtue of the highly conserved regions, the sequences and the proteins including these sequences can be utilized to generate antibodies which can recognize these highly conserved motifs and the proteins containing them and thus be useful in the treatment or prevention of a wide range of infections caused by Gram-positive bacteria.

1. An isolated antibody capable of binding an amino acid sequence selected from the group consisting of ALKTGKIDIIISGMTSTPERKK (SEQ ID NO: 14), VEGAVVEKPVAEAYLKQN (SEQ ID NO: 15), and EYAGVDIDLAKKIAK (SEQ ID NO: 16). 
     
     
       2. The antibody according to  claim 1 , wherein the antibody is a monoclonal antibody. 
     
     
       3. The antibody according to  claim 1 , wherein the antibody is a polyclonal antibody. 
     
     
       4. A pharmaceutical composition comprising the isolated antibody according to  claim 1  and a pharmaceutically acceptable vehicle, carrier or excipient. 
     
     
       5. Isolated antisera containing an antibody according to  claim 1 .